What’s Vulnerable › Vulnerabilities

CVE-2026-75016: Magazine Blocks <= 1.8.6 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'clientId' Block Attribute

• Severity: medium (CVSS 6.4 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.3% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-09-18 · updated 2026-09-18
• Weakness: CWE-79

Description

The Magazine Blocks plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the News Ticker block's clientId attribute in versions up to, and including, 1.8.6. This is due to insufficient input sanitization and output escaping in the NewsTicker::render() method, which concatenates the clientId block attribute into an HTML class attribute without applying esc_attr(). This makes it possible for authenticated attackers, with contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

Affected products

• wpblockart Magazine Blocks – Blog Designer, Magazine & Newspaper Website Builder, Page Builder with Posts Blocks, Post G: through 1.8.6

References

• https://plugins.trac.wordpress.org/browser/magazine-blocks/tags/1.8.5/includes/BlockTypes/NewsTicker.php#L106
• https://plugins.trac.wordpress.org/browser/magazine-blocks/tags/1.8.5/includes/BlockTypes/NewsTicker.php#L43
• https://plugins.trac.wordpress.org/browser/magazine-blocks/tags/1.8.6/includes/BlockTypes/NewsTicker.php#L106
• https://plugins.trac.wordpress.org/browser/magazine-blocks/tags/1.8.6/includes/BlockTypes/NewsTicker.php#L43
• https://plugins.trac.wordpress.org/changeset?reponame=&old=3656574%40magazine-blocks&new=3656574%40magazine-blocks
• https://www.wordfence.com/threat-intel/vulnerabilities/id/34e0862d-55d3-4bc7-ba26-309ef1567e2b?source=cve

Get alerted when CVE-2026-75016 or the next vulnerability affects your stack